Description
The Trane SWT3988 A/R Rollout Switch is a control component used in gas heating equipment to monitor flame rollout conditions inside the burner area. In HVAC systems, it is installed near the burner assembly to detect excessive heat caused by improper combustion or blocked flue passages. Rated to open at 180F, the switch interrupts the control circuit when temperature conditions are detected, helping shut down the system. It operates within the secure control network of furnaces to protect internal components, reduce overheating, and support safe combustion operation during heating requirements.
